fix: resolve lint issues and final integration fixes

- Fix ambiguous variable name in binance_rest.py
- Remove unused volumes variable in volume_profile_strategy.py
- Fix import ordering in backtester main.py and test_metrics.py
- Auto-format all files with ruff

1 files changed, 2 insertions, 1 deletions

diff --git a/shared/tests/test_resilience.py b/shared/tests/test_resilience.py
index 514bcc2..e287777 100644
--- a/shared/tests/test_resilience.py
+++ b/shared/tests/test_resilience.py
@@ -1,5 +1,5 @@
 """Tests for retry with backoff and circuit breaker."""
-import asyncio
+
 import time
 
 import pytest
@@ -63,6 +63,7 @@ async def test_retry_raises_after_max_retries():
 @pytest.mark.asyncio
 async def test_retry_respects_max_delay():
     """Backoff should be capped at max_delay."""
+
     @retry_with_backoff(max_retries=2, base_delay=0.01, max_delay=0.02)
     async def always_fail():
         raise RuntimeError("fail")